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发明名称
摘要
申请公布号	JPS6216318(B2)	申请公布日期	1987.04.11
申请号	JP19820154782	申请日期	1982.09.06
申请人	TOKYU KENSETSU KK	发明人	MITA TAKESHI;NISHIOKA SATORU
分类号	E21D21/00;E02D5/80;E21D20/00	主分类号	E21D21/00
代理机构		代理人
主权项
地址

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